Grindiitg-mill



J. SEDGEBEER. I

v Grinding Mill. No. 24,334. I Patented June 7, 1859.

UNITED STATES PATENT OFFICE.

JOSEPH SEDGEBEER, OF CINCINNATI, OHIO.

GRINDING-MILL.

Specification of Letters Patent No. 24,334, dated June 7, 1859.

To all whom it may concern:

Be it known that I, JosEPH SEDGEBEER, of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Grinding Mills, which I denominate Champion Mill; and I do hereby declare that the following is a full and clear description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon and made to form a part of this specification.

The nature of my invention relates to the construction and arrangement of grinding teeth, which form the dress, upon the grinding surface of iron millsby means of which great advantages are secured over iron grinding mills now in common use, as hereinafter set forth and represented.

In reference to the accompanying drawings Figure 1, is a perspective view showing the grinding plates arranged as foruse. Fig. 2, is a vertical sectional view taken through the red line (w m) Fig. 3, is a sec tional plan or top view of the lower plate, showing the peculiar construction and arrangement of the grinding teeth.

(A) represents the rotating plate, and (B) the stationary plate, the grinding faces of both said plates (A, B) are dressed alike, that is to say, the formation and arrangement of the grinding teeth of said plates, are the same in the plate (A) as in the plate (B).

(a) represents a series of crushing teeth by means of which the grain to be ground will be broken and prepared for more thorough grinding.

(b, 0,) are intermediateteeth that receive the substance to be ground from the teeth (a) and after acting upon it conduct it to the teeth (e).

(e) are a series of pulverizing teeth constructed in a diamond like form and so arranged that their cutting edges pass and intersect each other so that the substance to be ground may be passed or forced along toward the periphery of the plates (A, B) by the arrangement of the teeth (6), thereby aiding the centrifugal force and preventing the mill from clogging; near the point of discharge, the grinding surfaces or teeth (6) are multiplied to insure perfect pulverization.

It will be seen by reference to Fig. 2, that each row of teeth (a, b, c, e) penetrate the spaces of the next row of teeth thereby securing a direct passage and discharge of the substance ground.

Among the advantages secured by the within described construction and arrangement of grinding teeth may be mentioned the following: The running plate may be driven either Way, by means of which the cutting edges of the grinding teeth (a, b, 0, 6) may be always kept in proper and effective condition and the mill thereby rendered more durable; the direct discharge admits of more substantial grinding surface near the periphery of the plates and thereby multiplies their pulverizing capacity, both plates (A, and, B) being provided with corresponding grinding teeth, the plates are free from each other, and are not liable to heat' in running.

What I claim as my invention and desire to secure by Letters Patent is 1. Constructing the rotating plate (A) with the same dress or finish upon its grinding face, as that of the stationary plate (B) substantially as described for the purposes set forth.

2. I claim the diamond shaped teeth (a, b, c, e) constructed and arranged substantially as, and for the purposes set forth.

In testimony of which invention I have hereunto set my hand.

JOSEPH SEDQEBEER.

W'itnesses:

H. E. CLIFTON, D. O. PAIGE. 

